Which UN number is assigned to Category A infectious substances?

Category A infectious substances are assigned the UN number 2814. This classification is used for materials that pose a significant risk of infection to humans or animals, such as certain types of viral or bacterial pathogens that can cause severe disease. Regulations for the transport of these substances are stringent, reflecting their potential danger during transit.

UN 3373, which is associated with Category B infectious substances, indicates materials that are infectious but do not pose the same level of risk as Category A substances. UN 1234 and UN 3456 are not relevant to infectious substances; they pertain to completely different categories of dangerous goods not related to biological materials. Therefore, the assignment of UN 2814 for Category A is crucial for ensuring proper handling and safety measures during transportation of highly infectious agents.